[codex] Fix Postgres text array cell edits

[sorenbs]

Summary

• Fix inline-value PostgreSQL writes for native array cell edits by serializing JS arrays as cast array[...] expressions when noParameters compilation is enabled.
• Add a PGlite-backed regression test for updating a text[] column to ["tag1", "tag2", "tag3"] with inline parameters.
• Document native PostgreSQL array cell editing and add a patch changeset.

Root Cause

ImmediateValuePlugin marks Kysely values as inline literals when noParameters is enabled. Kysely's Postgres compiler cannot inline a JavaScript array as a single immediate value, so a text[] edit compiled from ["tag1", "tag2", "tag3"] threw invalid immediate value tag1,tag2,tag3 before the update query could run.

Validation

• Reproduced the failure first with pnpm vitest --project data data/postgres-core/dml.test.ts; the new regression failed with invalid immediate value tag1,tag2,tag3 before the fix.
• pnpm vitest --project data data/postgres-core/dml.test.ts
• pnpm typecheck
• pnpm test:data
• pnpm lint (passes with existing warning-only lint output)
• pnpm demo:ppg, then Playwright at http://localhost:4310: edited organizations.regions text[] for org_acme to [ "tag1", "tag2", "tag3" ], confirmed Save 1 row, saw no save error, and verified the database row persisted as ["tag1","tag2","tag3"].

[github-actions]

Compute preview deployed.

Branch: codex/fix-postgres-text-array-cell-edits
Service: codex-fix-postgres-text-array-cell-edits
Preview: https://cmqgrvstp01v11ef53kx2mqw2.cdg.prisma.build
Version: https://cv-2fbdbe3b5474.cdg.prisma.build

[coderabbitai]

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

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Run ID: 21783cc6-47fc-4442-9fa3-f8f77b233347

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Reviewing files that changed from the base of the PR and between 8c73515 and cd10a44.

📒 Files selected for processing (1)

• data/postgres-core/dml.test.ts

---

Summary by CodeRabbit

Bug Fixes

• Fixed PostgreSQL text array editing in Prisma Studio when inline SQL literals are used, ensuring array values are written back with explicit array[...] casts and zero query parameters.

Documentation

• Updated documentation to describe native PostgreSQL array editing using JSON-style array input, including correct cast behavior for inline literals.

Tests

• Added coverage for PostgreSQL text[] inserts and updates verifying the generated SQL shape (no parameters) and persisted values.

Walkthrough

The PR fixes PostgreSQL text array cell edits when queries are compiled with inline values (noParameters: true). ApplyWriteTransformationsProps and TransformValuesProps in data/query.ts gain an optional noParameters field. transformValues maps this to an inlineArrayValues option passed to transformValue, which now accepts an options object and adds a new code path that builds a cast(array[...] as text[]) SQL expression for array-typed columns. getInsertQuery and getUpdateQuery in data/postgres-core/dml.ts are updated to forward requirements?.noParameters into applyTransformations. New integration tests for both insert and update operations, a FEATURES.md entry, and a changeset file are also added.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 28.57% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title directly references the main fix: PostgreSQL text array cell edits, which is the primary focus of this pull request.
Description check	✅ Passed	The description provides a clear summary of the fix, root cause analysis, and validation steps that directly relate to the changeset modifications.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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👉 Steps to fix this

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
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Inline comments:
In `@data/postgres-core/dml.test.ts`:
- Around line 1235-1265: Add a new test below the existing "supports PostgreSQL
text array updates when parameters are inlined" test that mirrors the same
coverage for the insert flow. Create a test that calls getInsertQuery with a
text array column (arr_col) containing sample data like ["tag1", "tag2",
"tag3"], using the same noParameters: true option, and verify both the generated
SQL snapshot matches the expected inline array casting format and that the data
persists correctly when executed. This ensures getInsertQuery maintains the same
noParameters contract as the existing update test to prevent one-sided
regressions.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: 48b0dae5-1b43-4a9d-aa44-a5a09f2cfc64

📥 Commits

Reviewing files that changed from the base of the PR and between 4ad7169 and 8c73515.

📒 Files selected for processing (5)

• .changeset/fix-postgres-text-array-edits.md
• FEATURES.md
• data/postgres-core/dml.test.ts
• data/postgres-core/dml.ts
• data/query.ts